My gameplan, would you do this if you were in my shoes?

[Lee Cruz]

Hello everyone. I have a small contracting business. I have 100k to invest each year. 50k i put in the market(index funds) and 50k to put into rental properties under my business corporation. So the rental properties will be funded by my business. Does this strategy look right below

Hypothetical numbers will be for a $100,000 house for easy math

Year 1: 

20% down + rehab costs of  20k. Re fiance in 12 months. 

1 duplex done.

Year 2:

i) Cash back from the re finance to put down on another duplex. Refinance in 12 months.

ii) 50k from business to put down on another duplex. Refinance in 12 months. 

2 duplexes done.

Year 3:

i) Cash back from the 2 re finances to put down on 2 duplexes. Refinance in 12 months.

ii) 50k from business to put down on another duplex. Re finance in 12 months

3 duplexes done. Etc. 

Am i reading this right? Am i making this over simplistic? Is this even possible? All suggestions welcome.